What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveObservation

LOINC Code 81389-9: Right ventricular Stroke volume by US.continuity.VTI+Diameter

Name: LOINC Code 81389-9: Right ventricular Stroke volume by US.continuity.VTI+Diameter
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:05.775Z

81389-9 is a LOINC code used to identify Right ventricular Stroke volume by US.continuity.VTI+Diameter in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Stroke volume. It is commonly used with the system or sample type Heart.ventricle.right.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Stroke volume. It is commonly used with the system or sample type Heart.ventricle.right.

When is it used?

Used in lab systems, EHRs, and clinical data exchange.
May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
Status: ACTIVE
Order vs observation: Observation
Method: US.continuity.VTI+Diameter

What it does not mean

The code identifies the observation or test, not the actual result.

Key facts

Right ventricular Stroke volume by US.continuity.VTI+Diameter
Stroke volume
CARD.US; Cardiac; Cardiac output/Heart beat; Cardio; Cardiology; Cont; Echography; Heart Disease; Hrt; Hrt ventr; Point in time; QNT; Quan; Quant; Quantitative; R; Random; RT; RV; Sonogram; Sonograph; Sonography; SV; TVI; ULS; Ultrasound; US.cont.VTI+diam; Velocity Time Integral; Ventricular; Vol; Volume

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Right ventricular Stroke volume by US.continuity.VTI+DiameterRV SV US.cont.VTI+diamStroke volumeCARD.USVolPtHeart.ventricle.right

Frequently asked questions

Code details

Code81389-9

SystemLOINC

Display nameRight ventricular Stroke volume by US.continuity.VTI+Diameter

DescriptionStroke volume

Short nameRV SV US.cont.VTI+diam

ComponentStroke volume

PropertyVol

TimingPt

System (specimen)Heart.ventricle.right

ScaleQn

MethodUS.continuity.VTI+Diameter

ClassCARD.US

Example unitsmL

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.56

Last changed2.71

Part names

Stroke volumeVolPtHeart.ventricle.rightQnUS.continuity.VTI+DiameterVolumePoint in time (spot)Heart.ventricle RightUltrasound.continuity.VTI+Diameter

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.